Caterpillar Cat 994F Wheel Loader (Prefix 442) Service Repair Manual Instant Download.pdf

Service Repair Manual
Models
994F Wheel Loader

Shutdown SIS
Previous Screen
Product: WHEEL LOADER
Model: 994F WHEEL LOADER 442
Configuration: 994F Wheel Loader 44200001-UP (MACHINE) POWERED BY 3516 Engine
Disassembly and Assembly
3500 and 3500B High Displacement Engines for Caterpillar Built Machines
Media Number -SENR1126-33 Publication Date -01/07/2015 Date Updated -14/09/2018
i07201266
Front Drive Housing - Remove and Install
SMCS - 1151-010
Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A
1P-0074 Slide Hammer Puller 1
8B-7557 Threaded Adapter 1
B 138-7573 Link Bracket 2
C 1P-0520 Driver Group 1
D -
Guide Bolt
5/8x11 NC
2
Start By:
a. Remove the oil filter base. Refer to Disassembly and Assembly, "Engine Oil Filter Base -
Remove".
b. Remove the crankshaft front seal and the wear sleeve. Refer to Disassembly and Assembly,
"Crankshaft Front Seal and Wear Sleeve - Remove".
c. Remove the accessory drive (front). Refer to Disassembly and Assembly, "Accessory Drive
(Front) - Remove".
d. Remove the engine oil and water pump drive. Refer to Disassembly and Assembly, "Engine
Oil and Water Pump Drive - Remove".
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994F Wheel Loader 44200001-UP (MACHINE) POWERED BY 3516 Engine(SEBP3...
2020/3/17
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis...

e. Remove the auxiliary water pump. Refer to Disassembly and Assembly, "Auxiliary Water
Pump - Remove".
NOTICE
Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened component life.
Illustration 1 g00907030
1. Remove cover (1) and the O-ring seal.
2. Remove the bolts that hold shaft (2) in the front drive housing. Use Tooling (A) to remove
shaft (2). Remove the O-ring seal from shaft (2).
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3. Remove the bolts that hold shaft (3) in the front drive housing. Use Tooling (A) to remove
shaft (3), the idler gear, and the washer. Remove the O-ring seal from shaft (3).
4. Use Tooling (C) and a suitable press to remove the bearing from the idler gear, if necessary.
5. Install Tooling (B) and attach a suitable lifting device to front drive housing (4). The weight
of front drive housing (4) is approximately 209 kg (460 lb). Remove two bolts and install
Tooling (D). Remove the rest of the bolts that hold front drive housing (4) to the cylinder
block. Remove front drive housing (4) and the gasket.
Installation Procedure
Table 2
Required Tools
B 138-7573 Link Bracket 2
C 1P-0520 Driver Group 1
D - Guide Bolt (5/8x11 NC) 2
F - Loctite Flange Sealant 5900 -
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NOTICE
1. Install O-ring seals (9) on the dowel.
Note: If the dowels need to be replaced, the installed height is 6.0 ± 0.5 mm
(0.24 ± 0.02 inch).
2. Install the gasket for the front drive housing onto the cylinder block. Apply Tooling (F) to
both sides of all the gasket joints immediately prior to installation of front drive housing (4).
Install Tooling (D) into the cylinder block.
Note: Tooling (F) should span the entire abutment of the gasket joints and be worked into
any gaps.
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3. Install Tooling (B) and attach a suitable lifting device to front drive housing (4). The weight
of front drive housing (4) is approximately 209 kg (460 lb). Position front drive housing (4)
onto Tooling (D).
4. Install the bolts that attach front drive housing (4) to the cylinder block. Tighten the bolts
evenly. Cut any excess gasket from the face of the cylinder block.
5. If the bearing was removed from gear (6), use Tooling (C) to install the bearing.
After the bearing is installed, measure the bore of the bearing. The bore of the bearing must
be 90.0 ± 0.06 mm (3.54 ± 0.002 inch).
6. Coat the bore for O-ring seal (8) with clean engine oil. Install the O-ring seal on shaft (3).
7. Place washer (7) and gear (6) into position in the front drive housing. Install shaft (3). Install
the bolts for shaft (3).
8. Coat the bore for the O-ring seal of shaft (2) with clean engine oil. Install the O-ring seal
onto shaft (2).
9. Place shaft (2) into position in the front drive housing. Install the bolts for shaft (2).
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10. Install cover (1) onto the front drive housing.
End By:
a. Install the auxiliary water pump. Refer to Disassembly and Assembly, "Auxiliary Water
Pump - Install".
b. Install the engine oil and water pump drive. Refer to Disassembly and Assembly, "Engine
Oil and Water Pump Drive - Install".
c. Install the accessory drive (front). Refer to Disassembly and Assembly, "Accessory Drive
(Front) - Install".
d. Install the crankshaft front seal and the wear sleeve. Refer to Disassembly and Assembly,
"Crankshaft Front Seal and Wear Sleeve - Install".
e. Install the engine oil filter base. Refer to Disassembly and Assembly, "Engine Oil Filter
Base - Install".
Copyright 1993 - 2020 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Tue Mar 17 10:04:28 UTC+0800 2020
6/6
2020/3/17

Shutdown SIS
Previous Screen
i05448009
Vibration Damper - Remove and Install
SMCS - 1205-010
S/N - 7TR1-UP
S/N - 8WM1-UP
Removal Procedure
Table 1
Required Tools
A 8S-4757 Bolt 2
1. Remove damper guard assembly (1) .
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2. Tooling (A) must be modified to be used as guide studs. Remove the heads of Tooling (A).
Use the modified bolts as guide studs.
3. Install Tooling (A). Remove bolts (2) .
4. Slide vibration damper (3) on Tooling (A) enough to attach a suitable lifting device. The
weight of vibration damper (3) is approximately 227 kg (500 lb)
5. Remove vibration damper (3) .
1. Install vibration damper (3) in the reverse order of removal.
a. Lubricate bolts (2) with a molysulfide based lubricant.
b. Tighten bolts (2) to a torque of 1150 ± 60 N·m (848 ± 44 lb ft).
2/3
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Shutdown SIS
Previous Screen
i05845178
Vibration Damper - Remove and Install
SMCS - 1205-010
Removal Procedure
Table 1
Required Tools
A -
Guide Bolts
3/8 - 16 NC by 4 inch
2
B -
Guide Bolts
1/2 - 13 NC by 4 inch
2
C 138-7575 Link Bracket 2
D 1U-9393 Damper Guide Pin 2
Note: Some different types of vibration dampers are available for use. The following procedure
describes the removal and installation of a typical vibration damper assembly and damper group.
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1. Before you remove pulley (1) , make a note of the position of pulley (1) on the shaft.
2. Install a suitable lifting device onto pulley (1) . Remove bolts (2) . Reinstall bolts (2) into
holes (3) . Tighten bolts (2) enough to remove pulley (1) . The weight of pulley (1) is
approximately 39 kg (85 lb).
2/10
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3. Loosen set screw (4) in hub (6) . Remove hub (6) and key (5) .
Note: If it was necessary to remove the vibration damper as an assembly, proceed to Step 8.
4. Remove two bolts (7) and install Tooling (A) . Remove remaining bolts (7) . Use two
people and remove vibration damper (8) . The weight of vibration damper (8) is
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5. Remove two bolts (9) and install Tooling (B) . Remove remaining bolts (9) from vibration
damper (10) .
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6. Slide vibration damper (10) outward. Install Tooling (C) and a suitable lifting device to
vibration damper (10) . Remove vibration damper (10) . The weight of vibration damper
(10) is approximately 50 kg (110 lb).
7. Install Tooling (C) and attach a suitable lifting device to hub (13) . Remove bolts (11) .
Remove pulley hub (12) and hub (13) . The weight of pulley hub (12) and hub (13) is
8. The following steps are for removing the vibration damper as a complete assembly.
9. Remove two bolts (11) . Install Tooling (D) and a suitable lifting device to vibration damper
assembly (14) .
10. Remove remaining bolts (11) and remove vibration damper assembly (14) . The weight of
vibration damper assembly (14) is approximately 116 kg (255 lb).
Table 2
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Required Tools
A -
Guide Bolts
3/8 - 16 NC by 4 inch
2
B -
Guide Bolts
1/2 - 13 NC by 4 inch
2
C 138-7575 Link Bracket 2
D 1U-9393 Damper Guide Pin 2
E - Molybdenum Disulfide Base Lubricant -
1. The following steps are for installation of the vibration damper as a complete assembly.
2. Install Tooling (D) . Use a suitable lifting device and slide vibration damper assembly (14)
onto Tooling (D) . The weight of vibration damper assembly (14) is approximately 116 kg
(255 lb). Install bolts (11) .
Note: Ensure that the mark on vibration damper (14) is aligned with the mark on the
crankshaft.
Note: Apply Tooling (E) to the threads of bolts (11) prior to installation.
3. Remove Tooling (D) and install two bolts (11) .
Note: Refer to Specifications, "Vibration Damper" for the correct torque.
Note: If it was necessary to install the vibration damper as an assembly, proceed to Step 8.
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4. Install Tooling (C) and a suitable lifting device to hub (13) . Install hub (13) and pulley hub
(12) . The weight of hub (13) and pulley hub (12) is approximately 36 kg (80 lb). Install
bolts (11) .
Note: Apply Tooling (E) to the threads of bolts (11) prior to installation.
5. Install Tooling (B) . Install Tooling (C) and a suitable lifting device onto vibration damper
(10) . Position vibration damper (10) onto Tooling (B) . Install vibration damper (10) . The
weight of vibration damper (10) is approximately 50 kg (110 lb).
crankshaft.
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6. Install bolts (9) into vibration damper (10) . Remove Tooling (B) and install two bolts (9) .
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7. Install Tooling (A) . Use two people and install vibration damper (8) . The weight of
vibration damper (8) is approximately 30 kg (65 lb). Install bolts (7) . Remove Tooling (A)
and install two bolts (7) .
crankshaft.
8. Install key (5) and hub (6) . Tighten set screw (4) in hub (6) .
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9. Install a suitable lifting device onto pulley (1) . Install pulley (1) . The weight of pulley (1)
is approximately 39 kg (85 lb). Install bolts (2) .
10. Check the position of pulley (1) .
Copyright 1993 - 2020 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Tue Mar 17 10:06:22 UTC+0800 2020
10/10
994F Wheel Loader 44200001-UP (MACHINE) POWERED BY 3516 Engine(SEB...
2020/3/17

Shutdown SIS
Previous Screen
i06616604
Crankshaft Front Seal and Wear Sleeve - Remove
SMCS - 1160-011; 7558-011
Removal Procedure
Table 1
Required Tools
A 1U-7600 Slide Hammer Puller 1
B
1U-7325 Distorter Adapter -
6V-3143 Distorter Adapter(1)
-
C 5P-7409 Sleeve Distorter 1
(1)
For use with engines equipped with a seal adapter.
Start By:
a. Remove the vibration damper. Refer to Disassembly and Assembly, "Vibration Damper -
Remove and Install".
NOTICE
1/3
2020/3/17

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NOTICE
Every time that the crankshaft seal is removed from the wear sleeve, a
new wear sleeve and crankshaft seal must be installed.
1. Drill three evenly spaced holes in crankshaft front seal (1) and use Tooling (A) to remove
crankshaft front seal (1) from the front housing.
2. Insert Tooling (B) between the front housing and wear sleeve (2).
NOTICE
The use of excessive force on the sleeve distorter can cause the distorter
adapter to crack the housing. To help avoid damage to the engine, do
not use excessive force to remove the wear sleeve.
2/3
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Caterpillar Cat 994F Wheel Loader (Prefix 442) Service Repair Manual Instant Download.pdf

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